Surfing in Angola

I'm planning to head to Angola in search of some reported epic waves along the coast. I've got some information on where the waves are, so I'm keen to go exploring, but there's very little info on travelling to/in Angola out there! Is it still very unsafe? Would I be able to rent a car and drive along the coast - are there rental companies, and what are the roads like? And would I be able to find places to stay along the coast? And above all, what would the costs involved be for all of these things?